[rodgerd]

> My only complaint is that it is very expensive.

On the one hand, I guess. On the other hand, I have a pile of the WebSphere product stack in my life. The app server is ten times the cost of MQ. WPS is another ten times the cost of the app server. It looks cheap when you're buying the really expensive stuff!

Also if you're using MQ for things like guaranteed delivery and making use of clustering and security controls I suspect it's cheaper to pony up for the IBM software than it is to spend time messing about in the thickets of the free alternatives.